Function runInstallCommand

packages/cli/src/utils/addDependencies.ts:107–158

(
  pkgManager: PackageManager,
  projectDir: string
)

}

async function runInstallCommand(
  pkgManager: PackageManager,
  projectDir: string
): Promise<Ora | null> {
  switch (pkgManager) {
    // When using npm, inherit the stderr stream so that the progress bar is shown
    case "npm":
      await execa(pkgManager, ["install"], {
        cwd: projectDir,
        stderr: "inherit",
      });

      return null;
    // When using yarn or pnpm, use the stdout stream and ora spinner to show the progress
    case "pnpm":
      const pnpmSpinner = ora("Running pnpm install...").start();
      const pnpmSubprocess = execa(pkgManager, ["install"], {
        cwd: projectDir,
        stdout: "pipe",
      });

      await new Promise<void>((res, rej) => {
        pnpmSubprocess.stdout?.on("data", (data: Buffer) => {
          const text = data.toString();

          if (text.includes("Progress")) {
            pnpmSpinner.text = text.includes("|") ? text.split(" | ")[1] ?? "" : text;
          }
        });
        pnpmSubprocess.on("error", (e) => rej(e));
        pnpmSubprocess.on("close", () => res());
      });

      return pnpmSpinner;
    case "yarn":
      const yarnSpinner = ora("Running yarn...").start();
      const yarnSubprocess = execa(pkgManager, [], {
        cwd: projectDir,
        stdout: "pipe",
      });

      await new Promise<void>((res, rej) => {
        yarnSubprocess.stdout?.on("data", (data: Buffer) => {
          yarnSpinner.text = data.toString();
        });
        yarnSubprocess.on("error", (e) => rej(e));
        yarnSubprocess.on("close", () => res());
      });

      return yarnSpinner;
  }
}